fix error message

diff --git a/Cython/Compiler/ExprNodes.py b/Cython/Compiler/ExprNodes.py
index 1922db255530e4a1bff3d82aa96c0886484c7d40..af94ed03337aca049fcc0b54e498996ceb1503aa 100644 (file)
--- a/Cython/Compiler/ExprNodes.py
+++ b/Cython/Compiler/ExprNodes.py
@@ -5750,7 +5750,7 @@ static INLINE void __Pyx_RaiseNoneNotIterableError(void);
 """,
 impl = '''
 static INLINE void __Pyx_RaiseNoneNotIterableError(void) {
-    PyErr_SetString(PyExc_TypeError, "'NoneType' object is iterable");
+    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
 }
 ''')